Determining travel path features based on retroreflectivity
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United States of America Patent
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Oct 25, 2016
Grant Date -
Jun 26, 2014
app pub date -
Feb 27, 2014
filing date -
Feb 20, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Systems, devices, features, and methods for determining geographic features corresponding to a travel path to develop a map database, such as a navigation database, are disclosed. For example, one method comprises emitting light from a light source, such as a LIDAR device, while on the travel path. Returning light is received based on the emitted light. The returning light is used to generate data points representing an area about the travel path. The data points are filtered as a function of a return intensity value to identify a feature associated with the travel path, in which the feature is treated with a retroreflective substance.
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